Dual Loupe, 10x + 20x optic One pen with (3) interchangeable

One pen with (3) interchangeable front ends in (3) different sizes measuring

In box with paper

Both have lustraloy caps with chrome trim and have not been used outside the Parker factory

TIGHTENING & LOOSTENING THE BAND

Refill has long since dried out

Dual Loupe, 10x + 20x optic One pen with (3) interchangeableSINGLE HAND PIECE WITH 2 MAGNIFIERS. LARGER MAGNIFIER IS 10X 18mm. SMALLER SIZED MAGNIFIER IS 20X 12mm. LENGTH WHEN CLOSED IS 2" (51mm). FIVE ELEMENT LENS, WHICH MEANS THE LENS HAS 5 PEICES OF GLASS WITH TWO JOINED TOGETHER. THE USE OF MULTIPLE ELEMENTS ALLOWS FEW OPTICAL ABERATIONS THAN IS POSSIBLE WITH A SINGLE ELEMENT. THIS CREATES MORE ACURATE VISUALS AND A BETTER ABLILITY TO SEE DETAILS WITH LESS DISTORTION. Our best selling dual loupe!